Thanks dolot, I ended up going that way, basically.

Code:
Dim currentrow As DataRow = DirectCast(Me.DataGridView6.DataSource.Current, DataRowView).Row

 NewValue = InputBox("Enter New Serial", "New Serial")          
           
            Dim row = Me.SwitchesBindingSource.AddNew
           
            row("Serial") = Replace(CStr(NewValue), "'", "`")
            row("Model") = CStr(currentrow("Model").ToString)
.......
A little more code but I guess that's ok.